Home / 7,925.60-11,886.49-2,660.80

Finding the Fourth Proportional to 7,925.60, 11,886.49 and 2,660.80

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Solution

The fourth proportional to 7,925.60, 11,886.49 and 2,660.80 is: 3,990.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,925.60 : 11,886.49 = 2,660.80 : x
  2. Step 2: Convert to fraction form
    7,925.60/11,886.49 = 2,660.80/x
  3. Step 3: Cross multiply
    7,925.60x = 11,886.49 × 2,660.80
  4. Step 4: Simplify right side
    7,925.60x = 31,627,572.59
  5. Step 5: Solve for x
    x = 31,627,572.59/7,925.60
  6. Step 6: Final answer
    x = 3,990.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.